Hurricane Electric, an international IPv4 and IPv6 Internet backbone, has become the first network in the world to connect over 300 IPv6 networks. IPv4 addresses will run out by 2011. Hurricane Electric has been working diligently to move IPv6 into the forefront so this fact won’t become a crisis. As part of this forward thinking push, Hurricane Electric has been running dual-stack IPv6 and IPv4 at all its locations worldwide.